Page:NIOSH Manual of Analytical Methods - 5600.pdf/16

 ORGANOPHOSPHORUS PESTICIDES: METHOD 5600, Issue 1, dated 15 August 1994 - Page 16 of 20 Table 7.

(1) Approximate Retention Times of Selected Organophosphorous Compounds

Compound (by RT on DB-1) RT min 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40.

TEPP Triethylphosphorothioate Methamidophos Dichlorvos Mevinphos Ethoprop Naled Dicrotophos Monocrotophos Sulfotepp Phorate Dimethoate Demeton-S Dioxathion Fonofos Terbufos Disulfoton Diazinon Methyl parathion Oxydemeton methyl Ronnel Pirimiphos methyl Malathion Fenthion Parathion Chlorpyrifos Crufomate Isofenphos Tetrachlorvinphos Fenamiphos Merphos Fensulfothion Ethion Sulprofos Triphenyl phosphate EPN Azinphos methyl Leptophos Azinphos ethyl Coumaphos

3.71 4.37 5.12 5.81 10.45 17.15 17.61 18.00 18.27 19.06 19.18 19.44 20.15 21.30 22.04 22.22 23.09 23.37 25.37 26.(5) 26.86 28.13 28.53 28.74 28.98 29.11 29.64 31.91 33.26 34.09 35.19 36.61 37.88 38.49 40.88 42.64 44.16 45.12 46.55 49.31

Capillary Column(2) DB-1 DB-5 RRT (3) Elution RT, T, °C (4) min 0.128 0.151 0.177 0.200 0.360 0.592 0.608 0.621 0.630 0.658 0.662 0.671 0.695 0.735 0.760 0.767 0.797 0.806 0.875 0.90 0.927 0.971 0.984 0.992 1.000 1.004 1.023 1.101 1.148 1.176 1.214 1.263 1.307 1.328 1.411 1.471 1.524 1.557 1.606 1.702

111 113 115 117 131 151 153 154 155 157 158 158 160 164 166 168 169 170 176 179 181 184 186 186 187 187 189 196 200 202 206 210 214 216 223 228 232 235 240 248

no

no

no

no

DB-1701 RT, min

5.47 7.18 (B) 6.34 7.14 (B) 7.64 13.61 8.24 10.67 12.92 16.69 19.09 21.52 data 23.17 (C) 19.94 25.84 (E) 20.12 28.11 data 23.09 (C) 20.94 23.10 (C) 21.84 no data 21.70 25.06 (D) 23.04 26.33 (F) 23.57 25.87 (E) 23.80 25.02 (D) 24.19 26.43 (F) 23.75 25.00 (D) 26.48 31.37 data no data 27.39 29.30 27.90 29.72 28.33 31.78 (G) 28.93 31.78 (G) (A) 29.10 33.28 29.10 (A) 30.79 29.54 34.00 31.17 33.81 32.60 35.96 33.03 37.14 data 30.57 35.78 42.41 36.30 39.30 36.96 39.54 39.06 no data 41.06 47.83 43.67 no elution 43.91 47.38 46.50 47.43 50.10 67.86

DB-210 RT, min 7.88 4.93 12.03 10.54 19.20 20.10 21.46 (H) 31.43 31.60 21.11 18.92 29.33 (I) 24.97 23.46 22.20 21.52 (H) 22.78 20.99 33.21 no data 26.27 26.77 33.08 (J) 29.35 (I) 35.60 27.72 35.34 33.02 (J) 37.01 38.95 23.89 46.98 37.96 37.11 no data 47.13 49.24 41.68 50.40 60.88

(1) Actual retention times (RT) will vary with individual columns and chromatographic conditions. See Table 9 for chromatographic performance notes. Capillary Column conditions given in Table 6. Data from Backup Data Report [9]. (2) Sets of co-eluting or nearly co-eluting peaks are identified by letters: (A), (B), (C), (D), (E), (F), (G), (H), (I), and (J) (3) Retention times relative to Parathion. (4) Elution temperature (°C) for DB-1 column (see Table 6 for column conditions.) Elution temperatures are provided for convenience in selecting approximate GC oven temperatures for isothermal analyses of single or several closely eluting analytes. (5) Broad, tailing peak. NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94